MESON Chess Problem Database
Problem Display
PID: 44898 (7b/2N2pnK/2PN4/3QP3/3ppR2/2rbk1P1/1BP2R2/q4B2 w - - 0 1)
Groeneveld, Cornelis
Schach, 1984
#2
12 + 9
| 3748 | FIDE Album (1983-1985) | 1992 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Bxc1#
- 1...Qa2
- 2.Bc1#
- 1...Qa4
- 2.Bc1#
- 1...Qa5
- 2.Bc1#
- 1...Qa6
- 2.Bc1#
- 1...Qa7
- 2.Bc1#
- 1...Qa8
- 2.Bc1#
- 1...Rxc2
- 2.Qxd4#
- 1...Ra3
- 2.Qxd4#
- 1...Rb3
- 2.Qxd4#
- 1...Rc5
- 2.Qxd4#
- 1...Rxc6
- 2.Qxd4#
- 1...Bxf1
- 2.Qxe4#
- 1...Be2
- 2.Rxe2#
- 1...Bc4
- 2.Qxe4#
- 1...Bb5
- 2.Qxe4#
- 1...Ba6
- 2.Qxe4#
- 1...Sf5
- 2.Sxf5#
- 1...Sh5
- 2.Sf5#
- 1...Se6
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...Qc1
- Tries
- 1.Sc4+?
- 1...Bxc4
- 2.Qxe4#
- 1...Rxc4!
- 1...Bxc4
- 1.Sxe4?
- threat
- 2.R2f3#
- 2.R4f3#
- 1...Bxe4+
- 2.Qxe4#
- 1...Qxf1
- 2.R4f3#
- 1...Bxf1
- 2.R4f3#
- 1...Be2
- 2.Rxe2#
- 1...Qd1!
- threat
- 1.Scb5?
- threat
- 2.Qxd4#
- 1...Bxb5
- 2.Qxe4#
- 1...Qa4
- 2.Bc1#
- 1...Qa7
- 2.Bc1#
- 1...Sf5
- 2.Sxf5#
- 1...Se6
- 2.Sf5#
- 1...Rc4!
- threat
- 1.Bxd3?
- threat
- 2.Re2#
- 2.Qxe4#
- 1...Rxc2
- 2.Qxe4#
- 2.Qxd4#
- 1...Rxd3
- 2.Sc4#
- 2.Qxe4#
- 1...exd3
- 2.R4f3#
- 2.Qf3#
- 2.Qe4#
- 2.Qxd4#
- 1...Qd1
- 2.Qxe4#
- 1...Qe1
- 2.Qxe4#
- 1...Qf1
- 2.Qxe4#
- 1...f5
- 2.Re2#
- 1...Qh1+!
- threat
- 1.Bxc3?
- threat
- 2.Bd2#
- 2.Qxd4#
- 1...dxc3
- 2.Qc5#
- 1...Qc1
- 2.Bxd4#
- 2.Qxd4#
- 1...Qd1
- 2.Bxd4#
- 2.Qxd4#
- 1...Qe1
- 2.Bxd4#
- 2.Qxd4#
- 1...Qa4
- 2.Bd2#
- 1...Qa5
- 2.Bxd4#
- 2.Qxd4#
- 1...Qa7
- 2.Bd2#
- 1...Be2
- 2.Rxe2#
- 2.Qxe4#
- 2.Qxd4#
- 1...Sf5
- 2.Sxf5#
- 2.Bd2#
- 1...Se6
- 2.Sf5#
- 2.Bd2#
- 1...Qxc3!
- threat
- 1.Qc4?
- threat
- 2.Sd5#
- 1...Be2
- 2.Rxe2#
- 2.Qxe2#
- 1...Qa5
- 2.Bc1#
- 1...Bxc4!
- threat
- 1.Qxf7?
- threat
- 2.Sd5#
- 1...Be2
- 2.Rxe2#
- 1...Qa2
- 2.Bc1#
- 1...Qa5
- 2.Bc1#
- 1...Bc4
- 2.Rxe4#
- 1...Rc5!
- threat
- 1.Qa5?
- threat
- 2.Sd5#
- 1...Qxa5
- 2.Bc1#
- 1...Be2
- 2.Rxe2#
- 1...Qa2
- 2.Bc1#
- 1...Rc5
- 2.Qd2#
- 1...Bc4!
- threat
- 1.cxd3?
- threat
- 2.Qxe4#
- 1...exd3
- 2.R4f3#
- 2.Qf3#
- 2.Qe4#
- 2.Qxd4#
- 1...f5!
- threat
- 1.Sc4+?
- Keys
- 1.Qb3!
- threat
- 2.Sd5#
- 1...Be2
- 2.Rxe2#
- 1...Qa5
- 2.Bc1#
- 1...Rc5
- 2.Re2#
- 1...Bc4
- 2.Sxc4#
- threat
- 1.Qb3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 0
- REMOVED MATES = 17
- Sets
- Q(a);N_GUARD::B(B),XQ(a)
- Q(a);N_GUARD::B(B)
- R(b);XP(C)::QAB1(G),XP(e)
- R(b);::QAB1(G),XP(e)
- R(b);XP(I)::QAB1(G),XP(e)
- B(c);N_GUARD,XB(A)::QAR1(G),XP(f)
- B(c);N_GUARD::R1(D),XB(c)
- B(c);N_GUARD::QAR1(G),XP(f)
- S(h);N_GUARD::S(J),XS(h)
- S(h);N_GUARD::S(J)
- Tries
- Try
- S(J);CHECK
- Vars
- B(c);XS(J)::QAR1(G),XP(f)
- Refutation
- R(b);XS(J)
- Try
- S(J);P_SPINS(J),XP(f)
- Threat
- DUALS(2)
- Vars
- B(c);CHECK,OGATE,XS(J)::QAR1(G),XB(c)
- Q(a);XB(A)::R1(F)
- B(c);N_PINS(J),XB(A)::R1(F)
- B(c);N_GUARD,N_PINS(J)::R1(D),XB(c)
- Refutation
- Q(a);
- Try
- S(K);
- Threat
- QAB1(G),XP(e)
- Vars
- B(c);N_GUARD,XS(K)::QAR1(G),XP(f)
- Q(a);N_GUARD::B(B)
- S(h);N_GUARD::S(J),XS(h)
- S(h);N_GUARD::S(J)
- Refutation
- R(b);
- Try
- B(A);XB(c)
- Threat
- DUALS(2)
- Vars
- Q(a);::QAR1(G),XP(f)
- P(g);::R1(D)
- Refutation
- Q(a);CHECK
- Try
- B(B);XR(b)
- Threat
- DUALS(2)
- Vars
- P(e);OGATEB,XB(B)::QAB(G)
- Q(a);::B(B)
- Refutation
- Q(a);XB(B)
- Try
- Q(G);
- Threat
- S(K)
- Vars
- Q(a);N_GUARD::B(B)
- Refutation
- B(c);XQ(G)
- Try
- Q(G);XP(g)
- Threat
- S(K)
- Vars
- B(c);N_GUARD::R1(D),XB(c)
- Q(a);N_GUARD::B(B)
- B(c);N_GUARD::R1(F),XP(f)
- Refutation
- R(b);
- Try
- Q(G);
- Threat
- S(K)
- Vars
- Q(a);N_GUARD,XQ(G)::B(B)
- B(c);N_GUARD::R1(D),XB(c)
- Q(a);N_GUARD::B(B)
- R(b);OGATE::QAB1(G)
- Refutation
- B(c);
- Try
- P(C);XB(c)
- Threat
- QAR1(G),XP(f)
- Refutation
- P(g);
- Try
- Actual
- Q(G);
- Threat
- S(K)
- Vars
- B(c);N_GUARD,P_SPINR(b)::R1(D),XB(c)
- Q(a);N_GUARD::B(B)
- R(b);P_SPINB(c)::R1(D)
- B(c);N_GUARD,P_SPINR(b)::S(J),XB(c)
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